Home Postcode finder TAS Rosny Rosny postcode TAS Rosny is a locality in Tasmania covered by postcode 7018. Postcode 7018 State or territory Tasmania (TAS) Region Tasmania Add a free Rosny business listing More business listings in Rosny Businesses in RosnyRosny College20 Bastick St · 03 62449200 Common questionsWhat is the postcode for Rosny?Rosny, TAS has the postcode 7018.What state is Rosny in?Rosny is in Tasmania (TAS).Does postcode 7018 cover more than one suburb?Yes. Postcode 7018 covers 8 localities, so the postcode alone does not identify Rosny. Browse other postcodes in Tasmania, or widen the search to every Australian postcode.